protected virtual Texture2D LoadTextureFromStream(FileStream fileStream)
{
var texture = Texture2D.FromStream(this.graphicsDevice, fileStream);
if (texture.Format != SurfaceFormat.Color)
{
return(texture);
}
// unfortunately, MonoGame loads textures as non-premultiplied alpha
// need to premultiply alpha for correct rendering with NoesisGUI
var buffer = new Color[texture.Width * texture.Height];
texture.GetData(buffer);
for (var i = 0; i < buffer.Length; i++)
{
buffer[i] = Color.FromNonPremultiplied(
buffer[i].R,
buffer[i].G,
buffer[i].B,
buffer[i].A);
}
texture.SetData(buffer);
return(texture);
}
public static XNACOLOR ToXnaPremul(this XNACOLOR c)
{
return(XNACOLOR.FromNonPremultiplied(c.R, c.G, c.B, c.A));
}